Device for the mass spinning-in of spinning units in spindleless spinning machines

ABSTRACT

A spindleless spinning machine having electrically operable fiber feed, spinning and yarn withdrawing mechanisms. The devices is provided with a primary source of electric current and circuit means for synchronously operating the mechanism. An auxilliary power generator is mechanically connected to the mechanism to produce an electric current independent of the primary source. Means connecting the auxilliary source to the circuit control means to provide power to operate the mechanisms in the absense of the primary source.

United States Patent Prochazka et al.

[54] DEVICE FOR THE MASS SPINNING-IN OF SPINNING UNITS IN SPINDLELESSSPINNING MACHINES [72] lnventors: Miloslav Prochazka, Nachod; KarelSeidl, Cerveny Kostelec; Bedrlch Cesenek, Nachod, all of Czechoslovakia73] Assignee: Elitex Zavody textilnlho Strojirenstvi, Liberec,Czechoslovakia [22] Filed: July 27, 1970 2] Appl. No.: 58,228

[30] Foreign Application Priority Data Aug. 8, 1969 Czechoslovakia..5506-69 [52] US. Cl ..57/58.95, 57/82, 74/661, 318/102 [51] Int. Cl...D0lh 1/12 [58] Field of Search ..57/78, 80, 82, 58.89, 58.91, 57/5895;74/661; 318/102, 106; 187/29 [4 1 July 25, 1972 [56] References CitedUNITED STATES PATENTS 2,701,033 2/1955 Chiselbrook.... 187/29 3,354,6311 H1967 Elias et al. ..57/58.95 3,447,298 6/1969 Collins 57/5895 X3,462,936 8/1969 Boucek et a1. ..57/80 3,511,045 5/1970 Bures et a1.57/5895 X 3,541,774 11/1970 Sterba et al ..57/78 PrimaryExaminer-Stanley N. Gilreath Assistant ExaminerWerner H. SchroederAnorneyRichard Low and Murray Schaffer [5 7] ABSTRACT A spindlelessspinning machine having electrically operable fiber feed, spinning andyarn withdrawing mechanisms. The devices is provided with a primarysource of electric current and circuit means for synchronously operatingthe mechanism. An auxilliary power generator is mechanically connectedto the mechanism to produce an electric current independent of theprimary source. Means connecting the auxilliary source to the circuitcontrol means to provide power to operate the mechanisms in the absenseof the primary source.

13 Claims, 3 Drawing Figures Patented July 25, 1972 3,678,673

2 Sheets-Sheet 1 INVENTORS.

MILOS5H W BEDRICH CESENEK KAREL SEIDL w cl gp 'w 15* QTTORNY BACKGROUNDOF INVENTION The present invention relates to electrically operatedspindleless spinning machines and in particular to apparatus forcontrolling the operation thereof.

Spindleless spinning machines comprise a frame on which are rotatinglymounted a plurality of dish-like spinning chambers to which a sliver orroving of separated fibers are fed. The separated fibers are twisted bythe centrifugal action of the chamber into a yarn which is thenwithdrawn and reeled onto a bobbin. In order to form and with draw theyarn, the bobbin is provided with a pre-formed length of yarn which isinserted into the spinning chamber at the start of the operation; thespun fibers then adhering thereto. Generally, the spinning chambers arearranged with their axes of rotation horizontal, the sliver roving feedbeing located below it and the yarn reel bobbin above. During operation,a large quantity of free fiber exists which, when the machine isstopped, as at the end of a days run, or an unexpected power shortage,would fall and foul the machine. Consequently, provision must be made tomaintain the run-off of the spinning chamber and the withdrawing of theyarn, after the sliver feed is stopped. Similarly, when the machine isrestarted, it is necessary to first start the feed of sliver, so as tofill the spinning chamber to form a continuous yarn with the pre-formedyarn end before the length is reeled on to the bobbin.

It has been common to provide manual controls for operating the rovingor sliver feed independently of the spinning and withdrawing mechanism,whereby the feed may be stopped or started earlier than the spinningmechanism. It is obvious, that such controls require a degree of skillon the part of the operator to successfully perform sequential andsynchronous opera tion without loss of material, time and unnecessarymachine wear. It is also known to provide automatic control meansdependent upon the selected arrangement of time relays, timing devicesand automatic switch means to provide the necessary synchronous andsequential operation. While such automatic means has improved upon themanual operation, the procedure is dependent upon properly fabricatedand timing relays. It is however well known that such relays areadversely affected by changes in temperature and applied voltage so thattheir operating characteristics vary widely from day to day and in factfrom minute to minute. Furthermore the operating characteristics ofspindleless spinning machines react to various environmental conditions,as well as to the extent of fouling, tension and other operatingfactors, which affect the operation of the automatic controls. A thirdexpedient in control systems has been the use of series of camcontrolled switches, the cam being driven by the main drive motor in apredetermined time period. This technique also has its disadvantagesince the cam control is fixed in its timed relationship and is notreadibly adjustable for varying machine conditions.

The greatest disadvantage, however, of the known control systems is thatnone provide for sequential stopping of the machine elements in theevent of a complete. power shortage or power source breakdown. In eachof the known systems, the loss of power from the main power supplyresults in the instantaneous stopping of all portions of the spinningmachine, regardless of its state or condition of operation, thuspermitting the free fibers to foul the operating parts.

It is, therefore, an object of the present invention to provide aspindleless spinning machine which overcomes the draw backs of the priorsystems.

It is an object of the present invention to provide a spindlelessspinning machine having a control system which includes means for thesequential starting and stopping of the feed and spinning mechanisms.

It is another object of the present invention to provide a controlsystem for a spindleless spinning machine which includes means forpermitting run-off of spinning mechanisms under normal operatingconditions and even in the event of a complete power shortage orfailure.

These objects as well as others together with numerous advantages willbe more fully exemplified in the following disclosure of the presentinvention.

SUMMARY OF INVENTION According to the present invention a spindlelessspinning machine is provided having electrically operable fiber feed,spinning and yarn withdrawing mechanisms, a primary source of electricpower, and circuit control means for sequentially operating saidmechanisms. The machine is provided with an auxiliary source of powermechanically connected to the operating mechanism, itself therebyoperated to produce an independent source of electric power, andadditional circuit means connecting said independent source to thecircuit control system to power the system in the absence of the primarypower source.

In the preferred form of the invention the independent source comprisesa rotary generator or alternator connected to the rotary spinningchamber. Separate control switch means are also provided for directlycontrolling the selected sequential operation of the feed and spinningmechanisms.

Full details of the present invention are set forth in the followingdisclosure of the preferred embodiment in which both the structure andoperation will be seen.

BRIEF DESCRIPTION OF DRAWINGS In the disclosure reference is made to theaccompanying drawing wherein:

FIG. 1 is a schematic front elevation view of a spinning machineembodying the present invention;

FIG. 2 is a detailed view of the mechanical control means employed inthe present invention; and

FIG. 3 is a circuit diagram of the control system.

Before turning to the description of the preferred embodiment, it is tobe noted that only those details of a conventional spindleless spinningmachine are shown in the drawings which are necessary for anunderstanding of the present invention. Such conventional features, asare omitted, are well known to those skilled in the art and are notshown merely to keep the disclosure as brief and concise as possible.Further the drawings and description show a single spinning unit, andits attendant control mechanism. Each spinning machine comprises aplurality of such units ganged in an appropriate frame. It will beappreciated that the disclosure herein can be multiplied to provide amachine of appropriate and/or desireable size.

schematically shown in FIG. I is a single unit of spindleless yarnforming and spinning machine, having a source 1, such as container, can,bin, or similar receptacle, for a supply of fibrous material 2,preferable in coarse roving form. The roving 2 is pulled from the source1 by a feed mechanism comprising a tooth like separator 3, through apair of opposed driven feed rollers 4 and 4a into a rotatable spinningchamber 5. The feed roller 4 is fluted to grasp the roving. Theseparator 3 separates the roving into discrete slivers which are spun bythe centrifugal action of spinning chamber 5 to be withdrawn through amechanism comprising a channel 6 by a pair of squeeze rollers 66 and 66ain the form of a yarn 7. The yarn 7 is then wound on a bobbin S by beingfirst passed over a receprocating distributor bar and a winding roller8b.

The machine is provided with a primary source of ordinary line electriccurrent which operates an electric motor 9 which on the one hand drivesa transmission comprising gears 10, ll, 12 and 13 to which is secured aball bearing supported axle shaft 5a on which the spinning chamber 5 ismounted and on the other hand, through a transmission comprising gears15 and 16, a pair of electromagnetic clutches I7 and 18, a mechanicalclutch 19, to the axle shaft 4a of the feed roller 4. The separatortooth wheel is driven by a secondary electric motor 31 to which it isdirectly coupled.

The withdrawing roller 66 is driven by the primary motor 9 throughtransmission chain comprising gears 15, 20, 21 and an electromagneticclutch 22 connected to the central axis shaft 39 of the roller 66. Thewinding roller 8b is mounted about an axle shaft 8c which is driven bythe primary motor 9 through the transmission chain for the withdrawingroller 66 and agear 27 secured about the shaft 39, an intermediate gear28 and a gear 29 secured about the shaft 8c. Shaft 8c is provided withan electromagnetic brake 30. The withdrawing roller 66 and the windingroller 8b are rotatable reversible by a magnetic clutch 23 having ashaft, extending through gear 20, to which is secured a gear 24. Thegear 24 is operatively trained with gears 25 and 26, the latter of whichis secured about the shaft 39.

An independent power, or current producing mechanism 14 such as agenerator, of the DC dynamo or AC alternator type, is mechanicallyconnected to the drive shaft of the gear 12 so as to be rotatable withthe spinning chamber to produce an auxiliary source of electric power,on operation of the spinning machine. The generator means includes thenecessary rectifying, condensor and other current regulating meansconventionally employed. The electrical connection of the generator 14will be described later when references is made to FIG. 3. I

A lever 32 having a hook or eye 320 at its upper end, through which thespun yarn 7 passes, is pivotally mounted at its lower end 32b to theframe F of the machine. The lever 32 is connected to the clutch 19 whichcontrols the rotation of the feed roller 4. The lever 32 senses thetension of the withdrawn moving yarn 7 and in response thereto pivots toactivate or deactivate the mechanical clutch 19. The electromagneticclutch 18 is adapted to act as an additional brake for the feed roller4.

The machine is further provided with a reciprocable tie rod 35controlled by pivotable hand lever 36. The tie rod is mounted in guidechannels 35a and is provided at its front end with a head 35b which isadapted to engage the hook 320 of the lever 32. Depending from themiddle of the tie rod is a stop member 37. Movement of the hand lever 36causes the tie rod to position the sensing lever 32 to carry themechanical clutch 19 into the working position or the inoperativeposition. The stop member 37, on the other hand, engages the core memberof the first control relay 38 connected to the various clutches andbrakes, which are controlled thereby.

The control mechanism for the entire machine is contained in housing 34which as seen in FIG. 2 includes a spiral spur gear 40 which is mountedat the end of the rotating shaft 39, to the far side of the roller 66.The spiral gear 40 meshes with a cooperating gear 41 fixed to shaft 42.The gear 41 has integrally formed therewith or attached thereto aratchet 41a having a plurality of teeth arranged circumferentially thereabout. The gear 41 and shaft 42 are normally driven by the spur gear 40in the counterclockwise direction shown by arrow 8,. Pivotally securedabout the shaft 42 is a bell crank lever 43 to which is secured aresilient or spring pawl 44 adapted to engage the teeth of the ratchetwheel 41a. The upper arm of the freely pivoted bell crank 43 abutsagainst an adjustable stop 45 (such as a screw or other adjustablefixable member), while the lower arm of the bell crank 43 is biased by aspring 46 fixed to the machine frame F, to be thus normally urgedcounterclockwise.

A reversing lever 47 is pivotably mounted to a bearing post 48 and isarranged to be generally horizontal. The lever 47 is provided with aperpendicularly upwardly directed hooked finger 47a engageable with acooperating hook on pawl 49, pivoted on a central pin to rotate in aclockwise direction as indicated by the arrow S The outward end of thelever engages the operating rod of a second control relay 50 to normallymaintain it in closed position.

Mounted above the spur gear 40 is a double gear assembly 51 fixedlysecured to a shaft 51a; the large gear of which meshes with the spurgear diametrically opposite to the ratchet wheel 41 while the smallergear meshes with a gear 52 mounted on a connecting frame 53. Theconnecting frame 53 is pivotably secured at one end to the shaft 51aabout which the gear assembly 51 is secured so that the gear 52 can bemade to revolve about the axis formed by shaft 51a. The outer end of theconnecting frame 53 is connected to the moveable core of anelectromagnetic solenoid 54. The assembly gears 51 and the meshing gears52 rotate in opposite directions as indicated by the arrows S and 8;,respectively.

Below the gear 52 is mounted still another gear 55. Secured, adjustablyby conventional screw or key means, about the shaft of the gear 55, is asecond bell crank 56, one arm of which is biased counterclockwise by aspring 57a connected to the frame of the machine so that the other armabuts against an adjustable stop 57. Lastly, a spring 58, biases thecore of the solenoid 54 outwardly of the magnetic winding. In normaloperation the solenoid is normally activated so that its core isretracted, lifting the connecting frame 53 upwardly maintaining the gear52 spaced from the gear 55. At a predetermined time during operation thesolenoid 54 is deactivated permitting the spring 58 to draw the gear 52into meshing engagement with the gear 55, thereby linking gear assembly51 t6 gear 55 to cause it to rotate in the direction of the arrow 8,.

By following the diagram shown in FIG. 3 the operation of the apparatusboth from a mechanical and electrical control point of view will beclearly discerned. As seen in FIG. 3 the electric control componentsinclude in addition to the mechanism described, a pair ofelectromagnetic relays 59 and 60 each having respective normally opencontacts 591 and 601. Also provided is an electromagnetic relay 63having normally open contacts 632 and 637 and normally closed contacts631, 633 and 635. The second mechanical relay switch 50 has contacts 501and 503 which are open and contacts 502 and 504 which are normallyclosed. The first mechanical control switch 38 has normally opencontacts 381 and 383 and a normally closed contact 382. A terminal T forthe source of current is provided. The current passes through a mainswitch 69 and a conventional rectifying transformer 61 beforeconnections with the various components. Manually operable, onoffswitches 62, 64, 67 and 68 are also provided.

Initially, the electric current passes through the main switch 69 andthrough the transformer 61 where because of the initial normal conditionof relay 63 it activates the brake clutches l8 and 30 (FIG. 1). Theclutches 17, 23, 22 (FIG. 1) and solenoid 54 (FIG. 2) remain out ofcircuit and are unactivated. Upon pressing the push button 62 (FIGS. 1and 3), relay 63 becomes activated and its contact 637 closed. A holdingcontact 635 bridges push button 62 maintaining relay 63 activated evenon release of the push button. Consequently relay 59 is activated andswitched, whereupon the main electric motor 9 (FIG. 1) is started.Simultaneously, the contact 633 switches energizing the electromagnet 54(FIG. 2), and the contact 632 opens releasing brake l8 permitting thespinning chamber 5 to rotate. Upon pressing the push button 64 (FIG. 1)the relay 60 is switched which being connected to relay 59 through nowclosed contacts 591 thereby activates the electric motor 31 driving thefiber separating mechanism 3 (FIG. 1). Closing of relay 60 causescontact 601 to close and a signal lamp 65 is lighted, indicating that itis possible to feed sliver and perform the spinning operation.

Thereafter upon pressing, i.e., engaging the end control switch 38 bymovement of the hand lever 36 (FIG. 1) in the direction S and retainingthe switch 38 in the thus closed position, contact 382 is opened, whichthereupon interrupts power to brake 30 and brake 18 since contact 632had been previously opened. Contacts 381 and 383 which aresimultaneously closed cause clutches l7 and 23 (FIG. 1) to becomeengaged in a time sequence corresponding to the adjustment of saidcontacts. Thereupon, the rotary motion of motor 9 is transferred overtransmission gears 24, 25, 26, (FIG. 1), to rotate the withdrawingrollers 66 on shaft 39 in a reversed direction to that of the normalwithdrawing of yarn. Depending from the bobbin S is a loose end of yarnwhich is then moved downwardly through the withdrawing channel 6 intothe spinning chamber 5 (FIG. 1).

The reverse motion is interrupted by closing the second relay switch 50in response to the operation of the mechanism shown in FIG. 2. Lever 43,which is entrained by means of ratchet wheel 41, is caused to move in adirection opposite to the direction of arrow S by the reverse rotationof shaft 39. The upper arm of lever 43 thus moves downwardly and engagesthe end of reversing lever 47 which, by swinging about point 48 iscaused to move its opposite outer end upwardly to elevate the controlrod of relay 50. The rod causes relay 50 to switch its normal state,thereby opening the contact 502 and disengaging clutch 23 from thereversing gears 24, 25 and 26. Simultaneously, the contact 504 isopened, disengaging clutch 18 from the circuit of brake and contact 501is closed, causing clutch 22 to be engaged. Contact 503 is also closedthus causing clutch 17 to also engage (FIG. 1). During this operation,the finger 47a of lever 47 becomes hooked by the rotary pawl 49retaining the control switch 50in closed condition and the spinningunits of the machine performing their normal work as indicated by thecondition of the clutches, thus described.

The machine is stopped by means of push button 67 (FIG. 1), or ifdesired by means of the terminal switch safety 68 (FIG. 3). In eithercase relay 63 is deactivated, opening the contact 631, disengagingclutch 17 (FIG. 1), whereupon the rotary motion from the main electricmotor 9 to shaft 4a of the feed roller 4 is interrupted. Simultaneouslycontact 632 is closed re-engaging brake clutch l8, completely stoppingthe movement of shaft 4. The deactivation of relay 63 also opens thecontact 633, releasing the core of electromagnet 54 (FIG. 2), permittingthe frame 53 to swing about the axle 51a in a downward direction. Gear52 mounted in frame 53 is thus caused to engage gear 55 so that rotationof the double gear assembly 51 in the direction of arrow S causes thegear 52 to rotate in the direction of arrow 8,. Gear 55 as a consequencerotates in the direction of arrow 8,, carrying the lever 56 in the samedirection. As the lever 56 moves downwardly its end engages the rotarypawl 49 which thereupon swings in the direction of arrow 8,, releasingfinger 47a from the hook 49. The lever 47 falls of its own weightclockwise about the bearing 48 pulling with it the control rod of switch50. The opening of switch relay 50 closes contact 502 re-engaging thebrake 30 and stopping the rotary motion of shaft 8c and the windingrollers 8a and 8b. The earlier deactivation of relay 63 opens thecontacts 637, relays 59 and 60 are returned to their initial state, andthe machine is completely stopped.

It will be noted that the spinning chamber mechanism 5 is controlledthrough activation of the relay 63, the feed mechanism (rollers 4) iscontrolled through the mechanical relay 38, and that the withdrawingmechanism (rollers 8a, 8b and 8c) is controlled through the relay 50.These relays, their contacts and the associated clutches and brakes, areso arranged that synchronous and sequential operation of the mechanismscan be effected whereby on starting of the machine, the spinning chamberis first rotated, then the end of the withdrawn yarn reversed andinserted into channel 6, only after which the fiber feed and separatormechanisms are activated and the yarn directed in the opposite way toforward withdrawal. On stopping the machine, a reverse procedure iseffected, i.e., the fiber feed and separator mechanisms are deactivatedinitially, then the spinning chamber is stopped and finally thewithdrawing rollers themselves are stopped. The deactivation of motors 9and 31 are stopped only after the functional parts of the machine ceasetheir activity.

It is to be further appreciated, that the initial starting operation iseffected by hand manipulation of the actuating lever which engages themechanical switch 38, while subsequent operation is effectedsubstantially automatically by the mechanical operation of the gear andpawl, mechanism shown in FIG. 2, on the second mechanical switch relay50. While the machine is stopped with the same manipulation of relays 38and 50, the yarn tension sensing lever 32, serves to additionallycontrol the operation of the switch relay 38. When the yarn tensionfalls below a predetermined level, when the yarn breaks or when the yarnno longer grows because the feed mechanism has stopped, the lever 32falls, engaging the head of the rod 35 so that relay 38 is released fromcontact with the stop 37. If this occurs during otherwise normaloperation the lever 32 also disengages clutch 19 to immediately preventthe further feeding of fibers.

If for any reason, the main source of current is interrupted, as bypower failure, the machine is nevertheless permitted to run-off for adetermined period of time to exhaust the already fed and separatedfibers and to prevent damage to the machine or loss of materials whichmay occur from a sudden shut-down. The current generating means 14mechanically connected to the drive of the spinning chamber 5, iselectrically connected in parallel with the primary current sourceterminals T so as to feed each of the relays, clutches, brakes, etc. inthe same manner. During operation of the machine, the generator meansproduces a current which is regulated by the means described and whichcomprises an auxiliary stored source of electric power. This electricpower being sufficient to maintain the operation of the machine for atime to enable clearance of the feed fibers and orderly stopping of themachine. The machine continues to run until all power is exhausted fromthe generator or until there is no more yarn withdrawn through the eyeof the tension sensing lever 32.

The use of a small generator or alternator built into the operation ofthe machine has numerous advantages. It makes the machine self-reliantand not dependent on anything else but its own operation. Electriccurrent is being constantly generated when required, and when notrequired no standby condensors or storage means are required. Linkingthe generator, mechanically, to the spinning chamber allows for thedirect power production as a function of the most critical operation ofthe machine. It can however be linked if desired to the other rotaryelements.

It will thus be seen that the present invention provides a novel andadvantageous control system for spinning machines which insures theproper sequence of starting and stopping under both normal andextraordinary conditions. That provision is made for synchronousoperation of all the mechanisms, and for proper run-off of the machinein the event of electric power failures.

Various modifications and embodiments of the concepts herein disclosedcan be made. It is therefore intended that the present disclosure beillustrative only of the invention and not limiting in any manner.

What is claimed:

1. A spindleless spinning machine comprising electrically operable fiberfeed, a spinning chamber and yarn withdrawing mechanisms, a primarysource of electric power, circuit control means connecting said sourceof power to said mechanisms for synchronizingly operating saidmechanisms, auxiliary power generating means independent of said primarysource, said auxiliary power generating means being mechanicallyconnected to the operable mechanisms for producing an independentelectric current source and means connecting said independent source tosaid circuit control system to provide power in the absence of theprimary power source.

2. The machine according to claim 1 wherein said spinning chamber isfixedly mounted on a rotatable shaft and said generator means includes arotor operatively connected to said shaft to be rotatable therewith.

3. The machine according to claim 2 wherein said generator meanscomprises a DC generator.

4. The machine according to claim 2 wherein said generator meanscomprises an alternator having rectifying means.

5. The machine according to claim 1 wherein said control means forsynchronously operating said feed and spinning mechanism respectivelyincludes means for stopping said feed before stopping said spinningmechanism.

6. The machine according to claim 1 including:

an electric motor;

a rotatable spinning chamber for converting discrete fibers into yarn;

a rotatable feed mechanism for feeding fibers to said chamber;

a rotatable withdrawing mechanism for withdrawing yarn;

a rotatable winding mechanism for winding said yarn on a bobbin;

first connecting means linking said motor to said spinning chamber forrotating the same; second connecting means for linking said motor tosaid feed mechanism for rotating the same including, electricallyoperable first clutch means, interposed therebetween;

third connecting means for linking said motor to said withdrawingmechanism for rotating the same including an electrically operablesecond and third clutch means interposed therebetween, said second andthird clutches being selectively operable to efiect reversible operationof said withdrawing means, in forward and reverse directions;

fourth connecting means linking said motor to said winding mechanism forrotating the same including a fourth clutch interposed therebetween;

first control system having means for selectively directing said currentto said interposed clutches in predetermined order to sequentiallyobtain reverse operation of said withdrawing mechanism prior tooperation of said feed, withdrawing and winding mechanisms on startingof said machine and subsequent forward operation on stopping of saidmachine.

7. The machine according to claim 6 including a second control systemhaving means for selectively directing said current to said interposedclutches in predetermined order, said second system being responsive tothe operation of said first system for a predetermined length of time tothereafter effect the feeding of fibers of yarn in the forwarddirection.

8. The machine according to claim 7 wherein said feed mechanismsincludes a fiber separator and means for independently driving the same.

9. The machine according to claim 7 including means for sensing thetension on the withdrawn yarn and for deactivating said first controlsystem when said tension falls below a predetermined level.

10. The machine according to claim 9 wherein said sensing means isconnected to a fifth clutch interposed between said feed mechanism andsaid motor, said fifth clutch being deactivated when the tension in saidyarn falls below said predetermined level.

11. The machine according to claim 7 wherein said second control systemincludes a mechanical linkage with said first control system comprisinga solenoid, operated by said first control system, a detent mechanism,comprising a gear train between said spinning chamber and a releasablylocking ratchet and pawl device, said gear train being operable to locksaid ratchet and pawl in response to activation of said solenoid andrelease said ratchet and pawl on deactivation thereof, a connecting rodlinking said ratchet and pawl to said second control system, said rodbeing adapted to operate said second control system in response to saidratchet and pawl.

12. The machine according to claim 11 wherein said detent mechanism isadjustable.

13. The machine according to claim 10 including an electrically operatedrelay having a normally closed contact connecting the electric source tosaid solenoid.

1. A spindleless spinning machine comprising electrically operable fiberfeed, a spinning chamber and yarn withdrawing mechanisms, a primarysource of electric power, circuit control means connecting said sourceof power to said mechanisms for synchronizingly operating saidmechanisms, auxiliary power generating means independent of said primarysource, said auxiliary power generating means being mechanicallyconnected to the operable mechanisms for producing an independentelectric current source and means connecting said independent source tosaid circuit control system to provide power in the absence of theprimary power source.
 2. The machine according to claim 1 wherein saidspinning chamber is fixedly mounted on a rotatable shaft and saidgenerator means includes a rotor operatively connected to said shaft tobe rotatable therewith.
 3. The machine according to claim 2 wherein saidgenerator means comprises a DC generator.
 4. The machine according toclaim 2 wherein said generator means comprises an alternator havingrectifying means.
 5. The machine according to claim 1 wherein saidcontrol means for synchronously operating said feed and spinningmechanism respectively includes means for stopping said feed beforestopping said spinning mechanism.
 6. The machine according to claim 1including: an electric motor; a rotatable spinning chamber forconverting discrete fibers into yarn; a rotatable feed mechanism forfeeding fibers to said chamber; a rotatable withdrawing mechanism forwithdrawing yarn; a rotatable winding mechanism for winding said yarn ona bobbin; first connecting means linking said motor to said spinningchamber for rotating the same; second connecting means for linking saidmotor to said feed mechanism for rotating the same including,electrically operable first clutch means, interposed therebetween; thirdconnecting means for linking said motor to said withdrawing mechanismfor rotating the same including an electrically operable second andthird clutch means interposed therebetween, said second and thirdclutches being selectively operable to effect reversible operation ofsaid withdrawing means, in forward and reverse directions; fourthconnecting means linking said motor to said winding mechanism forrotating the same including a fourth clutch interposed therebetween;first control system having means for selectively directing said currentto said interposed clutches in predetermined order to sequentiallyobtain reverse operation of said withdrawing mechanism prior tooperation of said feed, withdrawing and winding mechanisms on startingof said machine and subsequent forward operation on stopping of saidmachine.
 7. The machine according to claim 6 includiNg a second controlsystem having means for selectively directing said current to saidinterposed clutches in predetermined order, said second system beingresponsive to the operation of said first system for a predeterminedlength of time to thereafter effect the feeding of fibers of yarn in theforward direction.
 8. The machine according to claim 7 wherein said feedmechanisms includes a fiber separator and means for independentlydriving the same.
 9. The machine according to claim 7 including meansfor sensing the tension on the withdrawn yarn and for deactivating saidfirst control system when said tension falls below a predeterminedlevel.
 10. The machine according to claim 9 wherein said sensing meansis connected to a fifth clutch interposed between said feed mechanismand said motor, said fifth clutch being deactivated when the tension insaid yarn falls below said predetermined level.
 11. The machineaccording to claim 7 wherein said second control system includes amechanical linkage with said first control system comprising a solenoid,operated by said first control system, a detent mechanism, comprising agear train between said spinning chamber and a releasably lockingratchet and pawl device, said gear train being operable to lock saidratchet and pawl in response to activation of said solenoid and releasesaid ratchet and pawl on deactivation thereof, a connecting rod linkingsaid ratchet and pawl to said second control system, said rod beingadapted to operate said second control system in response to saidratchet and pawl.
 12. The machine according to claim 11 wherein saiddetent mechanism is adjustable.
 13. The machine according to claim 10including an electrically operated relay having a normally closedcontact connecting the electric source to said solenoid.